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A043874
Numbers k such that the number of runs in the base-4 representation of k is congruent to 7 (mod 10).
0
4369, 4370, 4371, 4376, 4377, 4379, 4380, 4381, 4382, 4385, 4386, 4387, 4388, 4390, 4391, 4396, 4397, 4398, 4401, 4402, 4403, 4404, 4406, 4407, 4408, 4409, 4411, 4484, 4486, 4487, 4488, 4489, 4491, 4492, 4493, 4494
OFFSET
1,1
COMMENTS
Superset of A043598. Differs from A043865, from A043857 and from A043843 because numbers with run lengths of 17, 16, 15 or 14 clearly exist which are in only one these sequences. - R. J. Mathar, Oct 20 2008
MATHEMATICA
Select[Range[5000], Mod[Length[Split[IntegerDigits[#, 4]]], 10]==7&] (* Harvey P. Dale, Mar 19 2012 *)
CROSSREFS
KEYWORD
nonn,base
STATUS
approved